SSL is short for “secure socket layer” – without going into extreme details, it is a security technology which allows information to be transferred safely between two locations, such as two different websites, or between your browser and a website.
It does this by taking the data that is being sent, and jumbling it up into what we could consider nonsense (this is called “encryption”).
Imagine it like a bodyguard for information such as credit card numbers, passwords, etc!
Many hosting companies are now offering FREE SSL certificates. I like Siteground, because their customer service is fast and efficient, and it’s easy to install with just a few clicks.